Jeff Williams is a musician who composes and performs the music for RWBY. His involvement with Rooster Teeth started with writing music for the popular web series Red vs. Blue alongside the band Trocadero.
His music was featured on the show beginning with singles during Season 8 (Revelation), and continuing in Season 9 and Season 10. His other work includes music for another Rooster Teeth show, The Strangerhood. Jeff is a multi-instrumentalist, playing keyboards, guitar and bass. He is also an Assistant Professor at Berklee College of Music. Other artists featured in his songs include his daughter, Casey Lee Williams, as well Lamar Hall and his ex-wife, Sandy Lee Casey.